Mongaguá in Fall
In fall (March, April and May), Mongaguá sees average daytime highs around 27°C and overnight lows near 20°C, with 510 mm of rain over about 52 wet days across the season. It is the 2nd-warmest season and the 2nd-wettest season.
Over the season highs ease from about 29°C in early March to 24°C by late May. The sky is clear or mostly clear about 20% of the time across fall, and the air most often feels oppressive.
Fall is Mongaguá's 3rd-best season to visit on our travel score. For the whole year in context, see Mongaguá's year-round climate.
- Avg daytime high
- 27°C
- 2nd-warmest season
- Avg overnight low
- 20°C
- Rainfall
- 510 mm
- 52 wet days
- Avg wind
- 7 km/h
- Travel score
- 5.4
- 3rd-best season
- Months
- Mar · Apr · May
Temperature in Mongaguá in Fall
Over the season highs ease from about 29°C in early March to 24°C by late May.
A typical fall day in Mongaguá reaches about 27°C and drops to 20°C overnight. The warmest of the three months is March, the coolest May.
How fall really feels in Mongaguá
Once humidity and wind are folded in, fall brings about 3 days that feel above 32°C and 0 that feel at or below 0°C.
The story in fall is heat — humidity pushes the afternoon "feels like" well above the raw temperature.
Mongaguá weather by month
How the three fall months (March, April and May) compare with the rest of the year — the season's months are highlighted.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 29° / 23° | 334 | 25.9 | 13.3 | 3.5 |
| Feb | 29° / 23° | 300 | 22.2 | 12.8 | 3.5 |
| Mar | 28° / 22° | 274 | 24.2 | 12.2 | 4.0 |
| Apr | 27° / 20° | 131 | 14.9 | 11.5 | 5.6 |
| May | 25° / 18° | 105 | 12.4 | 10.9 | 6.5 |
| Jun | 24° / 16° | 77 | 9.1 | 10.5 | 7.1 |
| Jul | 23° / 15° | 87 | 9.2 | 10.7 | 7.2 |
| Aug | 24° / 16° | 71 | 9.3 | 11.2 | 7.1 |
| Sep | 24° / 17° | 125 | 14 | 11.9 | 6.2 |
| Oct | 25° / 19° | 153 | 17.1 | 12.6 | 5.4 |
| Nov | 26° / 20° | 190 | 19.1 | 13.2 | 4.9 |
| Dec | 28° / 22° | 235 | 22.4 | 13.5 | 4.2 |
Cloud cover in Fall
The sky is clear or mostly clear about 20% of the time across fall.
Chance of precipitation in Fall
Mongaguá gets around 510 mm of rain over 52 wet days across fall. The line is the day-by-day chance of measurable precipitation.
Humidity in Fall
Most of fall feels oppressive — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Fall
Winds average 7 km/h across fall.
Sunrise & sunset in Fall
Daylight runs from about 12 h 30 min in early March to 10 h 36 min by late May. The lit band spans sunrise to sunset each day.
Solar energy in Fall
Average shortwave solar energy reaching the ground each day across fall, about 4.3 kWh/m².
Hazard calendar for Mongaguá
In fall, Mongaguá overlaps its rainy season season. The full year is below, with each hazard's peak months called out.
Mongaguá's rainy season runs October–March, when most of the year's rain falls.
Is fall a good time to visit Mongaguá?
Our two travel scores rate fall for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
fall is a reasonable time to visit Mongaguá for sightseeing.
What to pack for Mongaguá in Fall
From fall's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In fall, Mongaguá sees daytime highs around 27°C and nights near 20°C. Pack light clothes and rain gear. Worth having: sun protection. About 52 days see rain.
Sea temperature near Mongaguá in Fall
The nearest coast averages about 25°C across fall — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea offshore is warmest in February at about 27°C and coldest in August near 20°C.
The water stays above 20°C all year — warm enough for a swim any month.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 27 | 27 | 27 | 26 | 24 | 22 | 21 | 20 | 21 | 22 | 23 | 25 |
| Comfort | Warm | Warm | Warm | Warm | Refreshing | Refreshing | Refreshing | Refreshing | Refreshing | Refreshing | Refreshing | Warm |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 27 | Warm |
| Feb | 27 | Warm |
| Mar | 27 | Warm |
| Apr | 26 | Warm |
| May | 24 | Refreshing |
| Jun | 22 | Refreshing |
| Jul | 21 | Refreshing |
| Aug | 20 | Refreshing |
| Sep | 21 | Refreshing |
| Oct | 22 | Refreshing |
| Nov | 23 | Refreshing |
| Dec | 25 | Warm |
UV index in Mongaguá in Fall
Clear-sky midday UV across fall averages around 8 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Mongaguá peaks around January 23 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 12 at about 5 (high).
The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 14 | 14 | 9 | 8 | 7 | 6 | 5 | 7 | 7 | 10 | 13 | 13 |
| Level | Extreme | Extreme | Very high | Very high | High | High | Moderate | High | Very high | Extreme | Extreme | Extreme |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 14 | Extreme |
| Feb | 14 | Extreme |
| Mar | 9 | Very high |
| Apr | 8 | Very high |
| May | 7 | High |
| Jun | 6 | High |
| Jul | 5 | Moderate |
| Aug | 7 | High |
| Sep | 7 | Very high |
| Oct | 10 | Extreme |
| Nov | 13 | Extreme |
| Dec | 13 | Extreme |
Air quality in Mongaguá in Fall
Average fine-particle pollution (PM2.5) through the year — so you can see where fall falls, not just the annual average.
Air quality in Mongaguá is worst in July — around 52 µg/m³ PM2.5 (poor), about 2.1× the cleanest month (February, 24 µg/m³).
Modeled monthly averages (CAMS reanalysis, 2015–2024).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 25 | 24 | 26 | 28 | 36 | 49 | 52 | 47 | 41 | 31 | 25 | 26 |
| Level | Moderate | Moderate | Moderate | Moderate | Poor | Poor | Poor | Poor | Poor | Moderate | Moderate | Moderate |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 25 | Moderate |
| Feb | 24 | Moderate |
| Mar | 26 | Moderate |
| Apr | 28 | Moderate |
| May | 36 | Poor |
| Jun | 49 | Poor |
| Jul | 52 | Poor |
| Aug | 47 | Poor |
| Sep | 41 | Poor |
| Oct | 31 | Moderate |
| Nov | 25 | Moderate |
| Dec | 26 | Moderate |
Where is Mongaguá?
Mongaguá sits at 24.1°S, 46.6°W, 8 m above sea level, in Brazil. The nearest listed city is Itanhaém, 20 km away.
Topography around Mongaguá
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Mongaguá.
Within 3 km, the terrain around Mongaguá has significant variations in elevation — a maximum elevation change of 472 m around an average of 60 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,055 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,404 m.
The land around Mongaguá is covered by water (42%) and trees (41%) within 3 km, water (48%) and trees (46%) within 16 km, and water (44%) and trees (42%) within 80 km.
Brazil travel facts
- Travel advisory
- Level 2
- Exercise Increased Caution
- Power plugs
- Type C / N
- 127 / 220 V · 60 Hz
- Prices
- ≈ 46% of US
- price level, 2025
- GDP per capita
- $10,713
- 2025
- Happiness
- 6.6 / 10
- World Happiness, 2025
- Safe drinking water
- 89%
- of population, 2024
- Homicide rate
- 19.3
- per 100k, 2023
- Road deaths
- 16
- per 100k/yr, 2019
- Income group
- Upper middle
- World Bank
- English
- Low
- EF EPI 482
- Religion
Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.
Data sources
Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Mongaguá (-24.0931°, -46.6208°, elevation 8 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google.